关键词: Voronoi点画, 特征引导, 距离变换, 偏置线, 阈值矩阵

Abstract: The traditional stippling methods have some deficiencies, for example, the distribution of stipples is not very reasonable, the features are not very clear and the iterations cost much time. In this paper, the fast feature-guided stippling method was proposed in accordance with the distribution and rendering of stipples. The distribution of stipples was generated by sampling on offset lines which were obtained by applying distance transformation to feature image. The rendering of stipples was the mapping procedure of threshold matrix generated previously to distributed stipples. The experimental results show that this method can help obtain good stippling style with reasonable stipples distribution. At the same time, the generating speed is increased greatly.

Key words: Voronoi stippling, feature-guided, distance transform, offset line, threshold matrix